Cited by 279Genetics, Aging, and Longevity in Model OrganismsDNA Repair MechanismsTelomeres, Telomerase, and Senescence

DNA replication stress, genome instability and aging

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Burhans, W. C., Weinberger, M.·2007·Nucleic Acids Research

Abstract

Genome instability is a fundamentally important component of aging in all eukaryotes. How age-related genome instability occurs remains unclear. The free radical theory of aging posits oxidative damage to DNA and other cellular constituents as a primary determinant of aging. More recent versions of this theory predict that mitochondria are a major source of reactive oxygen species (ROS) that cause oxidative damage. Although substantial support for the free radical theory exists, the results of some tests of this theory have been contradictory or inconclusive. Enhanced growth signaling also has been implicated in aging. Many efforts to understand the effects of growth signaling on aging have focused on inhibition of oxidative stress responses that impact oxidative damage. However, recent experiments in the model organism Saccharomyces cerevisiae (budding yeast) and in higher eukaryotes suggest that growth signaling also impacts aging and/or age-related diseases--including cancer and neurodegeneration--by inducing DNA replication stress, which causes DNA damage. Replication stress, which has not been broadly considered as a factor in aging, may be enhanced by ROS that signal growth. In this article, we review evidence that points to DNA replication stress and replication stress-induced genome instability as important factors in aging.

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Authors
Burhans, W. C., & Weinberger, M.
Affiliations
Roswell Park Comprehensive Cancer Center (US)
Corresponding author
Burhans, W. C.
Venue
Nucleic Acids Research
Published
2007-11-26
Volume
35
Issue
22
Pages
7545-7556
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2157145997
Cited by
279
References
89
Citations by year
2026: 15 · 2025: 11 · 2024: 18 · 2023: 8 · 2022: 13 · 2021: 10 · 2020: 16 · 2019: 10 · 2018: 10 · 2017: 17 · 2016: 15 · 2015: 17 · 2014: 26 · 2013: 18 · 2012: 18
FWCI
3.43
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (P0 CA016056, P30CA016056)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
replication stress, genomic instability, aging, free radical theory of aging, oxidative DNA damage, reactive oxygen species, mitochondrial reactive oxygen species, growth signaling, Saccharomyces cerevisiae, age-related diseases, cancer, neurodegeneration
MeSH terms
Aging, Animals, DNA Replication, Humans, Saccharomyces cerevisiae, Cellular Senescence, Oxidative Stress, Genomic Instability, Mice

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